The catalog

Patent invalidity dossiers.

4,717 patents in the database, sorted by number of on-file litigation cases. Of these, 1,886 have at least one tracked case across 3,914 litigations.

Demand letter analyzer

You got a patent demand letter. Now what?

Paste the letter — we extract the asserted patents, identify the asserter, characterize their litigation history, flag validity vulnerabilities, and draft a sample response letter your attorney can review. Free, private, ~2-3 minutes.

Analyze a letter →

Analyze a patent

Drop a US patent number — we’ll verify it on Google Patents and generate the full invalidity dossier.

By industry

  • Here is a concise summary of US Patent 6,085,318: Title: Computer system capable of booting from CD-ROM and tape Assignee: Hewlett Packard Development Co LP (Current Assignee) Inventors: Kerry B. Vander Kamp, Roberta W. Hensley, Curtis R…

    View full analysis →added 7/4/2026
  • I'll check live sources for this specific patent number before summarizing. US Patent 6,110,426 — Analyst Summary Confidence note up front: The retrieval I have for this patent (Google Patents full text, fetched 2026‑09‑08, plus…

    View full analysis →added 9/8/2026
  • I'll search for the specific patent number and any CAFC 2026 docket activity. Let me try alternative search formulations. Let me check specifically for CAFC 2026 docket activity and any current litigation. Summary — U.S. Patent No…

    View full analysis →added 9/9/2026
  • I'll research US patent 6,355,432 across the specified sources. Let me verify the claim set and check for any Federal Circuit / 2026 activity. Research Summary — US 6,355,432 (literal ID: "6355432") Confidence note up front: I found no…

    View full analysis →added 9/11/2026
  • I'll search for authoritative information on this patent number. US 6,399,365 B2 — Analyst Summary Search notes up front: My searches returned solid bibliographic and claim-family data for 6,399,365 specifically (Google Patents…

    View full analysis →added 9/11/2026
  • Here is a concise summary of US patent 6465961: US Patent 6465961: Semiconductor Light Source Using a Heat Sink with a Plurality of Panels Title: Semiconductor light source using a heat sink with a plurality of panels Assignee: Cao…

    View full analysis →added 6/15/2026
  • Summary of U.S. Patent 6,470,007 (US6470007B1) Search note / methodology: I searched for the literal identifiers "6470007," "US6470007," and "6,470,007." Results returned only the correct patent (plus its family members and citing…

    View full analysis →added 9/9/2026
  • I'll verify the patent's bibliographic data and check for any 2026 Federal Circuit activity. Let me run a couple more targeted checks on the patent's current record and any 2026 appellate activity. US Patent 6,575,563 — Verified…

    View full analysis →added 9/3/2026
  • I'll search the USPTO/patent databases and Federal Circuit 2026 dockets for this specific patent number. Let me dig into the patent's claims and abstract, and do a more targeted Federal Circuit docket check. Let me try to retrieve the…

    View full analysis →added 9/11/2026
  • Here is a concise summary of US patent 6640248: US Patent 6640248 Summary Title: Application-aware, quality of service (QoS) sensitive, media access control (MAC) layer Original Assignee: Malibu Networks Inc Current Assignee: Dow Chemical…

    View full analysis →added 5/10/2026
  • US Patent 6,676,246 — Search Results & Summary Search notes - USPTO/Google Patents records for US6676246B1 were located (Google Patents, FreePatentsOnline, Justia). Bibliographic data below matches the authoritative full text provided. -…

    View full analysis →added 9/3/2026
  • US patent 6700999, titled "System, method, and apparatus for multiple face tracking," was filed on June 30, 2000, and issued on March 2, 2004. The original assignee was Intel Corp, and the current assignee is Cedar Lane Technologies Inc…

    View full analysis →added 5/10/2026
  • US Patent 6,708,213: Method for Streaming Multimedia Information Over Public Networks Title: Method for streaming multimedia information over public networks Assignee: The patent's current assignees are Alcatel Lucent SAS and Sound View…

    View full analysis →added 5/10/2026
  • Here's a concise summary of US patent 6760749: US Patent 6760749: Interactive conference content distribution device and methods of use thereof Title: Interactive conference content distribution device and methods of use thereof Assignee…

    View full analysis →added 7/12/2026
  • Here's a concise summary of US patent 6771381: US Patent 6771381: Distributed computer architecture and process for virtual copying Title: Distributed computer architecture and process for virtual copying Current Assignee: MPHJ Tech…

    View full analysis →added 5/10/2026
  • US Patent 6,786,575 (US6786575B2) — Summary Verified bibliographic data (confirmed by the Google Patents record provided, plus USPTO-format front-page data from the Indiana University/USPTO OG archive, FreePatentsOnline, and PubChem): |…

    View full analysis →added 9/3/2026
  • Here's a concise summary of US patent 6795805: US Patent 6795805: Periodicity enhancement in decoding wideband signals Title: Periodicity enhancement in decoding wideband signals Current Assignee: Saint Lawrence Communications LLC Original…

    View full analysis →added 5/10/2026
  • US Patent 6,795,918: Service Level Computer Security Title: Service level computer security Current Assignee: WETRO LAN LLC (as of 2015-01-22) Inventor(s): Steven T. Trolan Filing Date: 2000-03-07 Issue Date: 2004-09-21 Abstract: The…

    View full analysis →added 5/10/2026
  • Here's a concise summary of US Patent 6,807,524: US Patent 6,807,524: Perceptual weighting device and method for efficient coding of wideband signals Title: Perceptual weighting device and method for efficient coding of wideband signals…

    View full analysis →added 5/10/2026
  • Summary: U.S. Patent No. 6,817,707 B1 I searched via web-accessible USPTO mirrors (Google Patents, Unified Patents, Justia, Espacenet, the CAFC's own site) for the literal number 6817707 / 6,817,707. The bibliographic data below is…

    View full analysis →added 9/3/2026